US3765480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cooling rotors
Assignee: Siemens AG
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Filing: 1971-04-20
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Granted: 1973-10-16
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Expires: 1991-04-20
Abstract
Abstract A cooling device for cooling a rotor comprises a condensation chamber on a front surface of the rotor and a plurality of cavities containing an evaporable working medium provided in the area of the heating zones at the periphery of the rotor and ending directly in the condensation chamber.
Inventors
- 👤 P Fries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:43
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/0208; H; H02; H02K; H02K9/00; H02K9/22; H02K9/225
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
212 words
A cooling device for cooling a rotor rotatable about its axis and having two front faces comprising means defining a plurality of cavities disposed at the periphery of said rotor, each of said cavities having at least a portion thereof extending substantially parallel to the axis of said rotor, a condensation chamber on a front face of said rotor, each of said cavities communicating with said chamber, said chamber and said cavities defining a hermetically sealed enclosure in which an evaporable working medium is disposed, said condensation chamber being defined at least in part by folded heat exchange surface having an area which is greater than the area of the front face of the rotor on which said condensation chamber is disposed, said heat exchange surface being defined by a plurality of substantially circular and concentrically positioned folds, the outside of said heat exchange surface being exposed to a heat exchanger medium to cool the working medium in said hermetically sealed enclosure, the inside of said heat exchange surface providing a condensation zone for said working medium, whereby centrifugal force is utilized for providing return flow of the condensed working medium from the condensing chamber to said plurality of cavities at the periphery of said rotor where said working medium is evaporated.
Claim 2
Dependent Claim
212 words
A cooling device for cooling a rotor rotatable about its axis and having two front faces comprising means defining a plurality of cavities disposed at the periphery of said rotor, each of said cavities having at least a portion thereof extending substantially parallel to the axis of said rotor, a condensation chamber on a front face of said rotor, each of said cavities communicating with said chamber, said chamber and said cavities defining a hermetically sealed enclosure in which an evaporable working medium is disposed, said condensation chamber being defined at least in part by folded heat exchange surface having an area which is greater than the area of the front face of the rotor on which said condensation chamber is disposed, said heat exchange surface being defined by a plurality of substantially circular and concentrically positioned folds, the outside of said heat exchange surface being exposed to a heat exchanger medium to cool the working medium in said hermetically sealed enclosure, the inside of said heat exchange surface providing a condensation zone for said working medium, whereby centrifugal force is utilized for providing return flow of the condensed working medium from the condensing chamber to said plurality of cavities at the periphery of said rotor where said working medium is evaporated.
Claim 3
Dependent Claim
15 words
A cooling device as claimed in claim 1, wherein the cavities are formed as channels.
Claim 4
Dependent Claim
23 words
A cooling device as claimed in claim 1, wherein the cavities are distributed in substantially rotational symmetry to the axis of the rotor.
Claim 5
Dependent Claim
21 words
A cooling device as claimed in claim 1, further comprising a plurality of channels connected in a network with the cavities.
Claim 6
Dependent Claim
57 words
A cooling device as claimed in claim 1, further comprising a plurality of channels cross-linked in a network with the cavities in a manner whereby a level for a liquid is adjusted during operation to the volume of working medium in the network, the level being substantially within the limit of the heating zones of the rotor.
Claim 7
Dependent Claim
94 words
A cooling device as claimed in claim 1, wherein the rotor comprises an axially extending shaft and a plurality of spatially separated rotor components and rotors affixed to the shaft for rotation about the axis of the rotor, the condensation chamber is on a front surface one of a rotor component and rotor, the cavities are provided in each rotor component and rotor, and further comprising a plurality of tubular connections connecting the cavities of next-adjaceNt rotor components and rotors whereby each cavity and plurality of interlinked cavities end directly in the condensation chamber.
Claim 8
Dependent Claim
183 words
A cooling device according to claim 1 including a second condensation chamber on the other front face of said rotor, each of said cavities communicating with said second condensation chamber, said second chamber being included in said hermetically sealed enclosure in which said evaporable working medium is disposed, said second condensation chamber being defined at least in part by a second folded heat exchange surface having an area which is greater than the area of the front face of the rotor on which said second condensation chamber is disposed, said second heat exchange surface being defined by a plurality of substantially circular and concentrically positioned folds, the outside of said second heat exchange surface being exposed to a heat exchange medium to cool the working medium in said hermetically sealed enclosure, the inside of said second heat exchange surface providing a condensation zone for said working medium, whereby centrifugal force is utilized for providing return flow of the condensed working medium from said second condensing chamber to said plurality of cavities at the periphery of said rotor where said working medium is evaporated.
Claim 9
Dependent Claim
175 words
A cooling device for cooling a rotor having a heat tube containing an evaporable working medium and utilizing centrifugal acceleration for the return flow of the condensate into the evaporation zone, the rotor having an axis and being rotatable about its axis and having a pair of spaced front surfaces substantially perpendicular to the axis, said cooling device comprising a condensation chamber on each front surface of the rotor, a plurality of cavities containing the working medium provided in the area of the heating zones at the periphery of the rotor and ending directly in the condensation chamber, a pair of heat exchangers each provided for and cooperating with a corresponding one of the condensation chambers, each of the heat exchangers having a heat exchange surface greater than the area of the corresponding one of the front surfaces covered by the corresponding one of the condensation chambers, each of the heat exchangers comprising a folded surface in the form of a bellows, each folded surface comprising a plurality of substantially circular concentrically positioned bellows folds.
Claim 10
Dependent Claim
175 words
A cooling device for cooling a rotor having a heat tube containing an evaporable working medium and utilizing centrifugal acceleration for the return flow of the condensate into the evaporation zone, the rotor having an axis and being rotatable about its axis and having a pair of spaced front surfaces substantially perpendicular to the axis, said cooling device comprising a condensation chamber on each front surface of the rotor, a plurality of cavities containing the working medium provided in the area of the heating zones at the periphery of the rotor and ending directly in the condensation chamber, a pair of heat exchangers each provided for and cooperating with a corresponding one of the condensation chambers, each of the heat exchangers having a heat exchange surface greater than the area of the corresponding one of the front surfaces covered by the corresponding one of the condensation chambers, each of the heat exchangers comprising a folded surface in the form of a bellows, each folded surface comprising a plurality of substantially circular concentrically positioned bellows folds.
Claim 11
Dependent Claim
36 words
A cooling device as claimed in claim 8, wherein the bellows folds are coaxial and concentric with the axis of the rotor and the opening angle 2 gamma of the bellows folds complies with the equation
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |